{
\def\sym#1{\ifmmode^{#1}\else\(^{#1}\)\fi}
\begin{tabular}{l*{6}{c}}
\hline\hline
                    &\multicolumn{1}{c}{(1)}&\multicolumn{1}{c}{(2)}&\multicolumn{1}{c}{(3)}&\multicolumn{1}{c}{(4)}&\multicolumn{1}{c}{(5)}&\multicolumn{1}{c}{(6)}\\
                    &\multicolumn{1}{c}{15 second}&\multicolumn{1}{c}{30 second}&\multicolumn{1}{c}{1 min}&\multicolumn{1}{c}{3 min}&\multicolumn{1}{c}{5 min}&\multicolumn{1}{c}{10 min}\\
\hline
Time Control Indicator&       0.294\sym{***}&       0.431\sym{***}&       2.099\sym{***}&       1.724\sym{***}&       3.509\sym{***}&       2.388\sym{***}\\
                    &   (0.00929)         &    (0.0106)         &    (0.0139)         &    (0.0323)         &    (0.0387)         &     (0.133)         \\
\hline
Observations        &       34208         &       41156         &      224198         &      121862         &      229328         &       49956         \\
\hline\hline
\end{tabular}
}
